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Opposite Conclusion (opposite + conclusion)
Selected AbstractsTowards a more realistic comparative analysis of multicomputer networksCONCURRENCY AND COMPUTATION: PRACTICE & EXPERIENCE, Issue 13 2004H. Sarbazi-Azad Abstract Several studies have examined the relative performance merits of the torus and hypercube taking into account the channel bandwidth constraints imposed by implementation technology. While the torus has been shown to outperform the hypercube under the constant wiring density constraint, the opposite conclusion has been reached when the constant pin-out constraint is considered. However, these studies have assumed a pure uniform traffic pattern and deterministic routing. The ,uniform traffic' assumption is not always justifiable in practice as there are many real-world parallel applications that exhibit non-uniform traffic patterns, which can create unbalanced traffic such as hotspots in the network. This paper re-examines the performance merits of the torus and hypercube in the presence of hotspot traffic. The comparative analysis is based on fully adaptive routing as this has been gaining popularity in recent practical multicomputers. Moreover, it uses a new cost model that takes into account the implementation cost of the network and its routers. The results reveal that for moderate and large system sizes, lower dimensional k -ary n -cubes (e.g. 2D torus) always outperform their higher dimensional counterparts even under the pin-out constraint. Copyright © 2004 John Wiley & Sons, Ltd. [source] On the stabilizing virtues of imperfect competitionINTERNATIONAL JOURNAL OF ECONOMIC THEORY, Issue 4 2005Thomas Seegmuller D43; E32 We analyze the stabilizing role of imperfect competition on fluctuations as a result of indeterminacy and endogenous cycles. In this paper, imperfect competition is a source of monopoly profits, because of producer market power. Considering an overlapping generations model with capital accumulation and elastic labor supply, we show that under imperfect competition, the emergence of endogenous fluctuations requires a weaker substitution between production factors than under perfect competition. In this sense, imperfect competition stabilizes fluctuations. However, we find an opposite conclusion concerning the elasticity of labor supply. Indeed, endogenous fluctuations are compatible with a less elastic labor supply under imperfect competition. [source] THE RETURN OF THE NATURALISTIC FALLACY: A DIALOGUE ON HUMAN FLOURISHINGTHE HEYTHROP JOURNAL, Issue 3 2008FRANCIS MICHAEL WALSH In response to the proposal justifying the morality of homosexual acts offered by Todd A. Salzman and Michael G. Lawler, this paper seeks to make intelligible the reasoning used by the New Natural Law Theory and others that arrives at the opposite conclusion. This article proposes to explore the weaknesses in the arguments offered in justification. By proposing an expanded notion of human nature so as to include sexual orientation as one of the factors from which to draw moral norms, the authors have adopted the central proposition of the Old Natural Law Theory defended by Francisco Suarez and others, viz., that human nature as such was a fit source from which to draw moral norms. Thus the New Natural Law Theory, formulated by Germain Grisez to answer the charge of the naturalistic fallacy, has curiously found itself being refuted by a reformulation of the Old Natural Law Theory. This article seeks to show how the proportionalistic reasoning used by Salzman and Lawler leads inevitably to a revival of the naturalistic fallacy. [source] Mayr's view of Darwin: was Darwin wrong about speciation?BIOLOGICAL JOURNAL OF THE LINNEAN SOCIETY, Issue 1 2008JAMES MALLET We commonly read or hear that Charles Darwin successfully convinced the world about evolution and natural selection, but did not answer the question posed by his most famous book, ,On the Origin of Species ,'. Since the 1940s, Ernst Mayr has been one of the people who argued for this point of view, claiming that Darwin was not able to answer the question of speciation because he failed to define species properly. Mayr undoubtedly had an important and largely positive influence on the study of evolution by stimulating much evolutionary work, and also by promoting a ,polytypic species concept' in which multiple, geographically separated forms may be considered as subspecies within a larger species entity. However, Mayr became seduced by the symmetry of a pair of interlocking ideas: (1) that coexistence of divergent populations was not possible without reproductive isolation and (2) reproductive isolation could not evolve in populations that coexist. These beliefs led Mayr in 1942 to reject evidence of the importance of intermediate stages in speciation, particularly introgression between hybridizing species, which demonstrates that complete reproductive isolation is not necessary, and the existence of ecological races, which shows that ecological divergence can be maintained below the level of species, in the face of gene flow. Mayr's train of thought led him to the view that Darwin misunderstood species, and that species were fundamentally different from subspecific varieties in nature. Julian Huxley, reviewing similar data at the same time, came to the opposite conclusion, and argued that these were the intermediate stages of speciation expected under Darwinism. Mayr's arguments were, however, more convincing than Huxley's, and this caused a delay in the acceptance of a more balanced view of speciation for many decades. It is only now, with new molecular evidence, that we are beginning to appreciate more fully the expected Darwinian intermediates between coexisting species. © The Author. Journal compilation © 2008 The Linnean Society of London, Biological Journal of the Linnean Society, 2008, 95, 3,16. [source] From temporary help jobs to permanent employment: what can we learn from matching estimators and their sensitivity?JOURNAL OF APPLIED ECONOMETRICS, Issue 3 2008Andrea Ichino The diffusion of temporary work agency (TWA) jobs has led to a harsh policy debate and ambiguous empirical evidence. Results for the USA, based on quasi-experimental evidence, suggest that a TWA assignment decreases the probability of finding a stable job, while results for Europe, based on the conditional independence assumption (CIA), typically reach opposite conclusions. Using data for two Italian regions, we rely on a matching estimator to show that TWA assignments can be an effective springboard to permanent employment. We also propose a simulation-based sensitivity analysis, which highlights that only for one of these two regions are our results robust to specific failures of the CIA. We conclude that European studies based on the CIA should not be automatically discarded, but should be put under the scrutiny of a sensitivity analysis like the one we propose. Copyright © 2008 John Wiley & Sons, Ltd. [source] When assumptions on visual system evolution matter: nestling colouration and parental visual performance in birdsJOURNAL OF EVOLUTIONARY BIOLOGY, Issue 1 2010J. P. RENOULT Abstract Comparative studies in visual ecology of birds often rely on several assumptions on the evolution of avian vision. In this study, we show that when these assumptions are not upheld, conclusions may be strongly affected. To illustrate this purpose, we reanalysed the data of Avilés & Soler (J. Evol. Biol.22: 376,386, 2009) who demonstrated that nestling gape colouration in altricial birds is associated with visual system. We show that a slight change in analysis methodology leads to opposite conclusions. Such conflicting result raises the problem of applying powerful methods developed for continuous variables to a small sample and a small number of independent events of qualitative visual system shift in comparative analyses. Further, we show that the current trend to assume strong phylogenetic inertia of avian visual systems is contradicted by data and that the sequencing of the SWS1 opsin gene should be considered as an alternative approach. [source] When superior courts reach different conclusions in the same child sexual abuse cases,is there a lesson to be learned?JOURNAL OF INVESTIGATIVE PSYCHOLOGY AND OFFENDER PROFILING, Issue 3 2008Frank Lindblad Abstract The objective of this study was to analyse Swedish child sexual abuse cases from 1989 to 2004 characterised by the following: (1) conviction in first trial in a court of appeal; (2) the Supreme Court later accepted a petition for a new trial; and (3) acquittal in second trial in the same court of appeal (with new judges). The study was conducted to determine what criteria were used for evaluating psychological child-related information and how they were applied. Eight argument themes were identified in the reasoning of the courts: (1) ability to perceive, remember, and communicate about experiences in a reliable way; (2) influence before first forensic interview; (3) influence during forensic interview/s; (4) motives for disclosing/retracting; (5) statement characteristics; (6) disclosure process; (7) behaviour and/or emotions related to investigations/interviews; and (8) psychological symptoms. The arguing of the courts was classified as belonging to one of three categories for each argument theme: (1) supporting/challenging the allegations; (2) opposing a conceivably supportive/challenging argument; and (3) indifferent. In six of the nine cases, arguments belonging to the same theme were presented in both court proceedings. Diametrically opposite conclusions were reached in 15 of 20 of these examples and same conclusion in one case. The evaluation method/s seemingly underlying the child psychological arguments of the courts may have a low reliability. Copyright © 2009 John Wiley & Sons, Ltd. [source] | |||||||||||||